Bulk Al/Al_3Zr composite was prepared by a combination of mechanical alloying(MA) and hot extrusion processes. Elemental Al and Zr powders were milled for up to 10 h and heat treated at 600℃ for 1 h to form stable Al_3Zr. The prepared Al_3Zr powder was then mixed with the pure Al powder to produce an Al–Al_3Zr composite. The composite powder was finally consolidated by hot extrusion at 550℃. The mechanical properties of consolidated samples were evaluated by hardness and tension tests at room and elevated temperatures. The results show that annealing of the 10-h-milled powder at 600℃ for 1 h led to the formation of a stable Al_3Zr phase. Differential scanning calorimetry(DSC) results confirmed that the formation of Al_3Zr began with the nucleation of a metastable phase, which subsequently transformed to the stable tetragonal Al_3Zr structure. The tension yield strength of the Al-10wt%Al_3Zr composite was determined to be 103 MPa, which is approximately twice that for pure Al(53 MPa). The yield stress of the Al/Al_3Zr composite at 300℃ is just 10% lower than that at room temperature, which demonstrates the strong potential for the prepared composite to be used in high-temperature structural applications. Bulk Al / Al_3Zr composite was prepared by a combination of mechanical alloying (MA) and hot extrusion processes. Elemental Al and Zr powders were milled for up to 10 h and heat treated at 600 ° C for 1 h to form stable Al_3Zr. The prepared Al_3Zr The mechanical properties of consolidated samples were evaluated by hardness and tension tests at room and elevated temperatures. The powder was then mixed with the pure Al powder to produce an Al-Al_3Zr composite. The composite powder was finally consolidated by hot extrusion at 550 ° C. results show that annealing of the 10-h-milled powder at 600 ° C for 1 h led to the formation of a stable Al_3Zr phase. Differential scanning calorimetry (DSC) results confirmed that the formation of Al_3Zr began with the nucleation of a metastable phase, which succeeded to the stable tetragonal Al_3Zr structure. The tension yield strength of the Al-10 wt% Al_3Zr composite was determined to be 103 MPa, which is approximately twice that for pure Al (53 MPa). The yield stress of the Al / Al_3Zr composite at 300 ° C is just 10% lower than that at room temperature, which demonstrates the strong potential for the prepared composite to be used in high-temperature structural applications.